we are currently investigating how to convert various mobile phone formats into other (more common) audio formats. Because there is no real standardization of audio formats on phones, there is a vast array of different formats out there, each with their own set of complications.
when/if we get closer to a solution that covers as many phone formats as possible, we will let people know.
edit: btw I hope you read our file formats pages stickied at the top of the forum, your question has been worded as if you didn't :-)